Systemwide calibration through standalone desktop soft is full of bugs. Despite years of complaining, some major problems - like SIDR not starting after computer power-saving mode and the inability to modify saved calibration targets - remain fully dealt with, and issues still persist. Offered workarounds would require in some instances, for example, user editing Windows registry files or allowing Sonarworks service to remote access user's computer via third-party software. In my opinion Sonarworks delegates problems to end-users which is plainly put rude, yet cost-effective for SW. When SoundID Reference works, it really does improve sound quality and seems to be very effective in managing sub-100Hz room modes. Sadly, other major shortcomings in the software drag the evaluation down.